Pemodelan Dispersi Pencemaran Udara Sumber Majemuk Industri Semen di Kabupaten Tuban Jawa Timur

Rahmadhani, Ardhi (2017) Pemodelan Dispersi Pencemaran Udara Sumber Majemuk Industri Semen di Kabupaten Tuban Jawa Timur. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Aktivitas industri pada proses produksi semen menghasilkan emisi salah satunya berupa debu yang berpotensi menimbulkan pencemaran lingkungan. Sebagian besar debu diemisikan melalui cerobong dan terdispersi disekitar area industri, sesuai kondisi meteorolgi lokalnya. Dalam penelitian telah dianalisis kuantitas emisi debu dari cerobong industri semen dan pola sebarannya. Pola sebaran dibedakan dalam periode rata-rata musim kemarau dan periode rata-rata musim hujan. Pola dispersi debu di area sekitar industri diestimasi menggunakan persamaan umum model Gauss. Karakteristik udara menggunakan data iklim dari stasiun meteorologi Juanda,periode pengamatan tahun 2016 sampai tahun 2017. Hasil analisis pola umum angin berupa arah dan kecepatan angin digambarkan dalam mawar angin (wind rose). Stabilitas atmosfer ditentukan berdasarkan kecepatan angin dan pola radiasi harian.Perhitungan konsentrasi ambien dilakukan pada setiap titik dengan perubahan 100 meter searah angin (sumbu�x) dan arah tegak lurus arah angin (sumbu-y) dari masing-masing titik cerobong. Hasil ini kemudian dianalisis dan digambarkan dalam peta kontur konsentrasi yang dioverlay pada peta wilayah penelitian. Hasil penelitian menunjukkan pola angin pada kondisi atmosfer rata-rata musim kemarau (bulan April hingga September) dominan ke arah timur, sedangkan kondisi atmosfer rata-rata pada musim hujan (bulan Oktober hingga Maret) dominan ke arah barat. Stabilitas atmosfer berdasarkan data meteorologi diperoleh pada periode musim kemarau adalah katogori B (tidak stabil) dan musim hujan adalah kategori C (sedikit stabil). Perhitungan model menunjukkan konsentrasi debu tertinggi dari sumber titik majemuk pada periode musim kemarau sebesar 444,26 µg/m3 pada koordinat (597477,4 m; 9246348 m). Sedangkan konsentrasi debu tertinggi pada periode musim hujan adalah 547,24 µg/m3 dengan koordinat (597877,4 m; 9246348 m). Rata-rata nilai konsentrasi sebaran emisi debu yang jatuh pada ketinggian 1,5 meter di atas permukaan tanah pada musim hujan memiliki nilai lebih besar dibandingkan dengan musim kemarau. Hasil penelitian menunjukkan sebagian besar debu emisi cerobong jatuh pada area industri. ========================================================= ========================================== Industrial activity in cement production process produces dust emission that has potential to increas environmental pollution. Most of dust is emitted through chimney and dispersed around industrial area, according to local meteorological conditions. In this research have analyzed the quantity of dust emission from the chimney of the cement industry and the pattern of its distribution. Distribution patterns were distinguished in dry season and rainy season period. The pattern of dust dispersion around industrial area was estimated using Gauss model equation. Air characteristics used climatic data of Juanda meteorological station, observation period 2016 until 2017. The results of wind pattern analysis were depicted in wind roses. The stability of the atmosphere was determined by wind speed and daily radiation. Ambient concentration on receiver points were calculated with a change of 100 meters in the direction of the wind (x- axis) from the chimney and the direction perpendicular to the wind direction (yaxis) from the chimney. These results were analyzed and illustrated on concentration contour map overlayed industrial area. The results showed that the pattern of wind in the dry season (April to September) was dominant to the east, while in the rainy season (October to March) was dominant to the west. The atmospheric stability obtained during the dry and wet season was class B (unstable) and class C (slightly stable). The model calculations showed the highest dust concentration from multiple point sources in dry season period was 444.26 ?g/m3 at coordinates (597477.4 m; 9246348 m). While the highest dust concentration in rainy season period was 547.24 ?g/m3 at coordinates (597877.4 m; 9246348 m). The average concentration of the dust emission distribution that fell down into 1.5 meter above ground level during the rainy season was greater than the dry season. Most of the dust fell down into industrial area.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Debu, Dispersi, Gauss, Majemuk, Semen
Subjects: T Technology > TD Environmental technology. Sanitary engineering
T Technology > TD Environmental technology. Sanitary engineering > TD883.5 Air--Pollution
Divisions: Faculty of Civil Engineering and Planning > Environment Engineering > (S1) Undergraduate Theses
Depositing User: Ardhi Rahmadhani
Date Deposited: 21 Aug 2017 02:38
Last Modified: 21 Aug 2017 02:38
URI: http://repository.its.ac.id/id/eprint/42811

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